Math Chapter Wise question with answer

Q01 The angle between the lines whose direction cosines satisfy the equations l + m + n = 0 and 2lm + 2nl – mn = 0 is – English · UP PGT 2021 UPPCS (Pre) 2002 Q02 A line lying in the yz - plane is inclined at an angle α with z - axis. Its direction cosines are- English · UPPSC GIC 2021 UPPSC Ashram Paddhati 2021 Q03 The direction cosines of the line which is perpendicular to the lines with direction ratios 1,–2, –2 and 0, 2, 1 ar... English · UKPSC Lecturer (Mains) 2020 Q04 The angle between the lines whose direction cosines are given by the equation 3 ℓ + m + 5n = 0 and 6mn –2n ℓ + 5 ℓ... English · UKPSC GIC 2018 Q05 If cosα, cosβ, cosγ are the direction cosines of a straight line, then (((()))) 2 2 2 sin sin sin α + β + γ α + β +... English · LT 2018 Rajashtan TGT 2016 PCS (Pre) 1997 Q06 If α,β,γ are the angles that a line makes with the positive direction of x,y,z axis respectively, then the directio... English · SECTION B PGT TIER-I 31.11.2014